Territory



(No Model.)

W. E. GROMPTO'N.

CARPENTERS PLANE. No. 518,521. Patente d Apr. 17, 1894.

FIG. 1.

WILLIAM E. CROMPTON, OF PARK CITY, UTAH TERRITORY.

CARPENTERS PLANE.

SPECIFICATION forming part of Letters Patent No. 518,521, dated April1'7, 1894.

Application filed July 14., 1893. Serial No. 480,526. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM E. ORoMPToN, a citizen of the United States,residing at Park City, in the county of Summit and Territory of Utah,have invented certain new and useful Improvements in Carpenters Planes;and I do hereby declare the following to beafull, clear, and exactdescription of the invention, such as will enable others skilledin theart to which it appertains to make and use the same.

My invention relates to improvements in planes, and especially toimprovements in rabbet planes, and it consists of certain novel featureshereinafter described and claimed.

The ordinary rabbet plane cuts a shaving somewhat wider than the plane,and this jams in the sides of the plane, rendering it necessary to stopto remove the same, and causing the inconvenience in working well knownto persons skilled in the art. that by splitting the shavinglongitudinally, or rather by cutting a longitudinal slit in the woodbefore the shaving is pared off by the bit, this inconvenience is almostentirely obviated.

My invention will be understood by reference to the acccompanyingdrawings, in which the same parts are indicated by the same lettersthroughout the several views.

Figure 1 represents a longitudinal section of an ordinary form of rabbetplane along the line to on of Fig. 2, and illustrates the application ofmy improvement. Fig. 2 represents an inverted plan view of the planeshown in Fig. 1, and Fig.3 represents an enlarged section along the line00 0c of Fig. 1, and looking down.

A represents the bottom plate or base of the plane provided with rearhandle, sides B, bit G, and the other attach ments commonly found inplanes. The bottom plate A is slotted as at afor the passagetherethrough of the bit 0 and of the shaving, and is also slotted at ato allow the passage of the knife D. The sides B are open as at b toallow the passage of the sides of the shaving.

The knife D is provided with a shoulder cl resting on the tip of thespringE which is secured beneath the front handle F, and held in placeby the screw G. This knife D is secured in a guide lug K, which lug isrigidly I have discovered.

attached to the cross piece H between the sides 13 of the plane. A screwL is either set in or made integral with the said lug K, and on thisscrew the thumb wheel M is mounted, having a flange adapted to engagethe upper end of the said knife D.' It will be seen if the the saidthumb wheel M be screwed down, that the knife D will'be projectedthrough the bottom of the plane, and that by means of the spring E, andthe thumb wheel M, the knife D may be adjusted to the desired position.

The operation of the device is as follows:-- The knife D and bit 0 beingprojected the required amount, which can only be determined byexperiment, the plane is operated in the usual way. The knife Dpreceding the bit (3, splits the surface of the wood in front of thesaid bit, and then these split parts readily slip or bend over oneanother, allowing the shaving to pass between the sides of the planewithout jamming.

While this invention is particularly applicable to rabbet planes, itwill be obvious that it may be used in connection with any of the planesordinarily is use. In all of such planes, there is a tendency for theshaving to stick in the plane, and this is obviated by the device asalready described.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

1. In a plane, the combination with a bit of a splitting knife Dadjustably mounted in front of said bit, a springE normallysupportingsaid knife, a guide log K inclosing the rear sides of said knife, ascrew L attached to said lug, and a thumb wheel M adapted to bear on theupper part of said knife, substantially as and for the purposesdescribed.

2. In a plane the combination with the bot tom piece A slotted as at a.and a; the rear handle, the front handle F, and screw G, the bit 0, theknife D, the spring E, the guide lug K, screw L and thumb wheel M,substantially as and for the purposes described.

In testimony whereof Iaffix my signaturein presence of two witnesses.

WILLIAM E. CROMPTON.

Witnesses:

BISMARCK SNYDER, WILSON I. SNYDER.

